diff --git a/docs/research/vehicle-probe.md b/docs/research/vehicle-probe.md
index 0484b3b..23b45e9 100644
--- a/docs/research/vehicle-probe.md
+++ b/docs/research/vehicle-probe.md
@@ -34,3 +34,15 @@ Ticket "Probe vehicle data and native passing in game" (part of map "Map: TpF3 o
 - The engine does **not** pass natively, on either multilane or two-way roads. Bus lanes weren't tested.
 - The read side is sufficient: a script can tell, per vehicle, which segment, lane and direction it's in, where it is, how fast it's going, and what the opposite lane is. So both the "held back" condition and an oncoming-traffic check can be computed. "Held back" must be derived (same segment and lane, small gap, speed below the vehicle's capability), because `blocked` doesn't report it.
 - **No documented command can make a vehicle ignore the one ahead** (see `overtake-feasibility.md`).
+
+## Searching for a way to make a vehicle ignore the one ahead
+
+- **Script commands:** none of the commands in `api.cmd` moves a vehicle, changes its lane, or turns off the queueing. The full list was checked.
+- **Model metadata:** `landVehicle` (engines, topSpeed, weights) and `extent` have no following or blocking parameters.
+- **`Transformator.LandVehicleScriptingApi` / `TransfOutput.setUserTransf`:** a per-model animation script. It can offset the model on screen, which could make a vehicle look like it changes lanes, but it doesn't touch the simulation.
+- **Executable strings:** `LandVehicleMoveSystem.cpp` contains `GetNextEdgeTrafficPenaltyAndAlternatives`, `existingPathLaneSwitch` and `switchIndices`. So the engine itself switches lanes at segment boundaries based on a traffic penalty, which matches the lane split seen on segment 28894. None of it is exposed to scripts.
+- **`api.cmd.debug.makeComponentExchangeCmd(entity, MovePath)`** (save loaded with "Debug mode is active"): building the command with a `MovePath` **succeeds**. `api.cmd.sendCommand(cmd, callback)` fails with `Error decoding argument #3`, because engine-state scripts can't pass a callback (base scripts never do). The version without a callback was committed but **never ran in game**. Whether the swap is applied, and what a positive `timeToIgnore` does, are both **untested**.
+
+## Decision
+
+Overtaking on two-way roads (one lane per direction) is dropped (decided by the user, 2026-10-05). The effort continues on multilane roads only: a held-back vehicle should switch to a lane the slower vehicle isn't in.